Strain type displacement sensor suitable for small and medium-sized actuator shafts and operation method

A technology of displacement sensors and actuators, which is applied in the direction of instruments, electric devices, electromagnetic means, etc., to achieve the effects of small size and weight, reasonable structure, and high measurement accuracy

Pending Publication Date: 2021-12-03
SHANGHAI SATELLITE ENG INST
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  • Strain type displacement sensor suitable for small and medium-sized actuator shafts and operation method
  • Strain type displacement sensor suitable for small and medium-sized actuator shafts and operation method
  • Strain type displacement sensor suitable for small and medium-sized actuator shafts and operation method

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[0026] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will facilitate further understanding of the present invention in any form of techniques, but will not limit the invention in any form. It should be noted that several variations and improvements can also be made without departing from the concept of the present invention. These are all of the scope of protection of the present invention.

[0027] The present invention provides an actuator suitable for small displacement of the strain sensor and calibration method. Spring steel with a high elastic spring structure as the elastic member, it can be analyzed by simulation output ensure sufficient strain deformation in the case where a large amount of measurement accuracy to meet the requirements. In the symmetric leaf four strain gauges attached, prior successful test fix a displacement between the both end faces of the reed - strain relationship and of util...

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Abstract

The invention provides a strain type displacement sensor suitable for small and medium-sized actuator shafts and an operation method. The strain type displacement sensor comprises an elastic component, a strain gauge component and a connecting flange unit, the connecting flange unit comprises an upper connecting flange part and a lower connecting flange part; the upper connecting flange part is arranged at the upper part of the strain type displacement sensor suitable for the small and medium-sized actuator shafts; the lower connecting flange part is arranged at the lower part of the strain type displacement sensor suitable for the small and medium-sized actuator shafts; the elastic component adopts a spring steel reed structure; the strain gauge component is arranged on the spring steel reed structure; based on a resistance strain gauge contact type measurement method, the sensor naturally has the advantages of high sensitivity, high measurement precision, wide measurement range, small size, small weight and the like.

Description

Technical field [0001] The present invention relates to a strain displacement sensor technology, and in particular, to an actuator suitable for small strain shaft displacement sensor and method of operation. Background technique [0002] Displacement measuring very wide application scenario, a means, structure, thermal deformation test very important element. Currently, photo-optical non-contact method and a laser displacement meter or the like based on digital image correlation method has become a major means of displacement measurement, but often limited by the test environment and measurement conditions can not be used. [0003] Based on this highly sensitive method of measuring a contact resistance strain gauge, high accuracy, wide measurement range, their small size and weight, etc., there has been a strain gauge measurement, but the measurement is limited to the cross member structure, in order to meet shaft assembly strain measurement, [0004] Patent Document CN103090778B...

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Application Information

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IPC IPC(8): G01B7/16G01B7/02
CPCG01B7/18G01B7/02
Inventor 张永涛周春华叶子龙贾奥男茅建伟尹永康熊良磊
Owner SHANGHAI SATELLITE ENG INST
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